INTERIM CONSOLIDATED STATEMENTS OF SHAREHOLDERS' DEFICIT - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Treasury Stock	Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)
Balance (in shares) at Dec. 31, 2018		6,751	232
Balance at Dec. 31, 2018	$ (1,198)	$ 68	$ (2,500)	$ 23,413	$ (23,016)	$ 837
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(3,346)				(3,346)
Issuance of equity grants, net (in shares)		163
Issuance of equity grants, net	42	$ 1		41
Interest rate cash flow hedge	(63)					(63)
Stock-based compensation	140			140
Balance (in shares) at Mar. 31, 2019		6,914	232
Balance at Mar. 31, 2019	(4,425)	$ 69	$ (2,500)	23,594	(26,362)	774
Balance (in shares) at Dec. 31, 2018		6,751	232
Balance at Dec. 31, 2018	(1,198)	$ 68	$ (2,500)	23,413	(23,016)	837
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(32,816)
Balance (in shares) at Sep. 30, 2019		6,907	232
Balance at Sep. 30, 2019	(33,828)	$ 69	$ (2,500)	23,883	(55,832)	552
Balance (in shares) at Mar. 31, 2019		6,914	232
Balance at Mar. 31, 2019	(4,425)	$ 69	$ (2,500)	23,594	(26,362)	774
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(24,596)				(24,596)
Redemption of equity grants, net (in shares)		(3)
Interest rate cash flow hedge	(185)					(185)
Stock-based compensation	144			144
Balance (in shares) at Jun. 30, 2019		6,911	232
Balance at Jun. 30, 2019	(29,062)	$ 69	$ (2,500)	23,738	(50,958)	589
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(4,874)				(4,874)
Redemption of equity grants, net (in shares)		(4)
Interest rate cash flow hedge	(37)					(37)
Stock-based compensation	145			145
Balance (in shares) at Sep. 30, 2019		6,907	232
Balance at Sep. 30, 2019	(33,828)	$ 69	$ (2,500)	23,883	(55,832)	552
Balance (in shares) at Dec. 31, 2019		6,908	232
Balance at Dec. 31, 2019	(36,916)	$ 69	$ (2,500)	24,026	(59,079)	568
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(753)				(753)
Issuance of equity grants, net (in shares)		190
Issuance of equity grants, net	4	$ 1		3
Interest rate cash flow hedge	(279)					(279)
Stock-based compensation	338			338
Balance (in shares) at Mar. 31, 2020		7,098	232
Balance at Mar. 31, 2020	(37,606)	$ 70	$ (2,500)	24,367	(59,832)	289
Balance (in shares) at Dec. 31, 2019		6,908	232
Balance at Dec. 31, 2019	(36,916)	$ 69	$ (2,500)	24,026	(59,079)	568
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	3,498
Balance (in shares) at Sep. 30, 2020		7,081	232
Balance at Sep. 30, 2020	(33,038)	$ 70	$ (2,500)	24,520	(55,581)	453
Balance (in shares) at Mar. 31, 2020		7,098	232
Balance at Mar. 31, 2020	(37,606)	$ 70	$ (2,500)	24,367	(59,832)	289
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,452				1,452
Redemption of equity grants, net (in shares)		(23)
Interest rate cash flow hedge	59					59
Stock-based compensation	77			77
Balance (in shares) at Jun. 30, 2020		7,075	232
Balance at Jun. 30, 2020	(36,018)	$ 70	$ (2,500)	24,444	(58,380)	348
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	2,799				2,799
Issuance of equity grants, net (in shares)		6
Issuance of equity grants, net	0
Interest rate cash flow hedge	105					105
Stock-based compensation	76			76
Balance (in shares) at Sep. 30, 2020		7,081	232
Balance at Sep. 30, 2020	$ (33,038)	$ 70	$ (2,500)	$ 24,520	$ (55,581)	$ 453